【SQLSerrver】游标的使用（游标循环遍历一个表中的数据）

drop table aa
 go
 create table aa
 (
     [name] nvarchar(20),
 [language] nvarchar(20)
 )
 go
 
insert into aa([name],[language]) values ('张学友','zh');
 insert into aa([name],[language]) values ('张学友','en');
 insert into aa([name],[language]) values ('刘德华','zh');
 insert into aa([name],[language]) values ('黎明','jp');
 insert into aa([name],[language]) values ('刘德华','jp');
 go
 


declare  curaa cursor
 for select [name],[language] from aa order by name,[language]
 begin
 declare @name nvarchar(20);
 declare @language nvarchar(20);
 declare @num decimal(18);
 create table #aa([name] nvarchar(20),[language] nvarchar(20),cc decimal(18));
 OPEN curaa;
 fetch next from curaa into  @name,@language;
 if ((@name is not null) and (@language is not null))
 insert into #aa(cc,[Name],[language])values(1,@name,@language);
 WHILE (@@FETCH_STATUS <> -1)
 begin
 set @name = null;
 set @language = null;
 fetch next from curaa into  @name,@language;
 if ((@name is not null) and (@language is not null))
 begin
 select @num=Count(Name)+1 from #aa where Name=@name
 insert into #aa(cc,[Name],[language])values(@num,@name,@language);
 end
 end
 select * from #aa order by Name,[language];
 drop table #aa;
 CLOSE curaa;
 DEALLOCATE curaa;
 end